Middle+/Senior Data Scientist (Anti-Fraud) for Citrus Systems Codemotion $$$$

Madfish

Madfish

Accounting & Finance, Data Science

Remote

Posted on May 10, 2026

Experience in fraud detection (highly preferred) + ability to independently scope and lead ML project end-to-end

Requirements

Position name: Senior Data Scientist — Anti-Fraud System

Level: Senior / Middle+

Hard skills requirements (including years):

  • Strong experience in Data Science / Machine Learning
  • Experience in fraud detection systems — highly preferred
  • Ability to transition rule-based systems to ML/predictive models
  • Experience with near real-time data processing
  • Strong knowledge of statistical modeling and ML algorithms
  • Python (preferred stack, final decision left to the DS)
  • SQL and database proficiency
  • Ability to independently scope a data environment and define technical approach

Soft skills requirements:

  • Ability to independently lead a project end-to-end
  • Strong communication skills (stakeholder alignment required)
  • Self-driven, proactive, consultative mindset

Office/Remote: Remote

Project tasks:

  • Scope existing rule-based fraud detection system (16 static flag types) and define technical approach
  • Propose and implement ML stack and architecture
  • Evolve system into dynamic, predictive, learning-based fraud detection model
  • Work toward near real-time fraud processing as the project scales
  • Work as part of 2-person AI team with full ownership of the anti-fraud project
  • Facilitate stakeholder alignment

English level: Upper-Intermediate